This is my first time ever using an OPK. Friday I noticed a little EWCM (CD11). We did the deed at like midnight! Saturday (CD12) I noticed an increase in EWCM. That evening I had light cramping. Today, CD 14, I took my first ever OPK with evening/diluted urine and this was the result. There is still some EWCM, but not as much. My husband had to leave Saturday morning for a work trip so Friday/Saturday was our only day together! I'm hoping O has already happened and these are left over hormones or that O will happen soon, so we can be within the three day range at least!